JP4500111B2 - Package manufacturing apparatus, package manufacturing method, and package - Google Patents

Description

  The present invention relates to a packaging body manufacturing apparatus, a packaging body manufacturing method, and a packaging body, and more particularly to a packaging body manufacturing apparatus, a packaging body manufacturing method, and a packaging body for a packaging body in which the pressure-resistant strength of a sealed portion is reinforced. Is.

As a sealing means when sealing cylindrical films filled with contents such as sausages and stick cheeses to obtain individual packages, a method of connecting the ends of the cylindrical films with metal wire clips is known. It has been. However, in the method of connecting with a metal wire clip, there is an inconvenience such as detecting the wire clip in the metal detection in the product inspection, so that the method of focusing and sealing the end portion of the tubular film is performed. It has become. In such a sealing method, the mechanical strength is reduced such that pinholes are likely to occur at or near the sealed portion, and therefore the following countermeasure has been proposed (see Patent Document 1).
(1) A tape that compensates for the thickness of the cylindrical film to be sealed is disposed at the end of the cylindrical film after being focused, and then sealed together with the cylindrical film.
(2) A tape that compensates for the thickness of the cylindrical film at the sealed portion is arranged in the absence of the contents at the end of the cylindrical film that is not yet focused, and the cylindrical film end and the tape are focused together. And seal it.

Japanese Patent No. 2516885

  However, in the package manufactured by the conventional means for sealing the end of the tubular film, the pressure resistance strength of the welded part against the increase in internal pressure due to heat treatment such as retort or boil is insufficient, and the welded part is torn and the sealing is insufficient. There was a risk that the contents would rot due to the inflow of outside air, and the surrounding area of the sealed portion of the package could be soiled due to the leaching of moisture in the contents. In addition, if the package is torn during the retort process, it takes time to remove the dirt, which greatly reduces the production efficiency. Furthermore, simply attaching a reinforcing tape to the converging part and welding the converging part and the reinforcing tape together may leave a communication hole in the center of the converging part, possibly resulting in poor sealing of the package, eliminating the communication hole. Therefore, if welding is performed strongly, the pressure strength of the welded portion may be reduced.

  Therefore, the present invention provides a packaging body manufacturing apparatus, a packaging body manufacturing method, and a packaging body that improve the sealing performance at the sealed end, that is, the converging section, and that manufactures a packaging body with increased strength. Objective.

  In order to achieve the above-described object, the packaging body manufacturing apparatus according to the invention described in claim 1 has a cylindrical shape with respect to the cylindrical film 15a filled with the contents C, as shown in FIGS. A squeezing device 40 for flatly forming the absent portions 15b of the contents C at predetermined intervals in the longitudinal direction of the film 15a; a converging device 70 for converging the absent portions 15b in a direction crossing the flat surface; and a tape 120. A tape supply device 90 that holds the tape 120 on a non-existing portion 15b that is held in a U-shape and is converged from a direction different from the longitudinal direction of the cylindrical film 15a; A first sealing device 51, 65 that forms a first seal 121 together with the tape 120; a second sealing device 5 that forms a second seal 122 so as to close the U-shaped open part of the tape 120. 6 and 66.

  If comprised in this way, it will become a package manufacturing apparatus which manufactures the package body by which the edge part was sealed with the tape and the sealed edge part was enclosed by the tape in the bag shape. Since the end of the package is surrounded by a tape in a bag shape, even if the pressure of the contents is received, the deformation of the end is suppressed by the tape, so the sealing performance is high and the end is damaged. It becomes a difficult package.

  Moreover, the packaging body manufacturing apparatus according to the invention described in claim 2 includes, as shown in FIGS. 1 and 3, for example, in the packaging body manufacturing apparatus 1 according to claim 1, the first sealing devices 51, 65 and The two sealing devices 56 and 66 are one ultrasonic welding device 100 that melts the welding objects 15b and 120 by ultrasonic vibration energy and press-bonds the welding materials 15b and 120; Includes a horn 50 having a T-shaped surface to which the objects to be welded 15b and 120 are bonded.

  If comprised in this way, since it seals by ultrasonic welding, it can seal by the local heating of the part to be sealed, and the influence of the heat to the contents can be suppressed. Further, by forming the horn in a T shape, the first seal and the second seal can be applied simultaneously.

  Moreover, the packaging body manufacturing apparatus according to the invention described in claim 3 is the first in the ultrasonic welding apparatus 100 in the packaging body manufacturing apparatus 1 according to claim 2, as shown in FIGS. The surface 65a for crimping the anvil welds 15b and 120 for the first seal 121 and the surface 66a for crimping the anvil welds 15b and 120 for the second seal 122 are configured separately. It should be noted that configuring separately includes a case where separate anvils are combined and integrated.

  If comprised in this way, the surface which crimps | bonds the to-be-welded object of an anvil will be shifted slightly in a pressing direction, and the 1st seal | sticker and the 2nd seal | sticker can be given by changing the force to crimp | bond.

  Moreover, the packaging body manufacturing apparatus according to the invention described in claim 4 is the first one in the ultrasonic welding apparatus 100 in the packaging body manufacturing apparatus 1 according to claim 2 or 3, as shown in FIG. The anvil 65a that forms the seal 121 has a depression 63 for storing the molten material to be welded on the surface to be pressed.

  If comprised in this way, a to-be-welded object will be sealed by crimping | bonding in a part without a hollow, and the to-be-welded material (henceforth a molten material) melted | cured when crimping | flow-bonded will flow and accumulate in a hollow, and it will be welded there. Integrate with things. For this reason, the sealed part of the object to be welded is reinforced by the part formed thick by integrating the object to be welded and the melt, and the strength is maintained.

  In addition, the packaging body manufacturing apparatus according to the invention described in claim 5 is the packaging body manufacturing apparatus 1 according to any one of claims 1 to 4, for example, as shown in FIGS. An original fabric supply device 20 for supplying the belt-like film F; a vertical sealing device 13 for forming the tubular film F1 by overlapping and sealing the side edges of the belt-like film F; and filling the tubular film F1 with the contents C The apparatus further includes a filling device 30; and a cutting device 80 for cutting the tubular film at the portion where the first seal 121 is provided.

  When configured in this way, a cylindrical film is supplied, a cylindrical film is formed, the contents are filled, a non-existing part of the contents is formed, converged at the non-existing part, and tape is supplied to seal and seal It becomes the package body manufacturing apparatus which manufactures the package body in an integrated manner by cutting at the formed part.

  In order to achieve the above object, a packaging body manufacturing method according to a sixth aspect of the present invention includes a packaging body manufacturing apparatus 1 according to any one of the first to fifth aspects as shown in FIG. In addition, a cylindrical film filled with the contents or a band-shaped film F and the contents C to be filled are supplied to produce a package.

  If comprised in this way, it will become a package body manufacturing method which manufactures the package body by which the edge part was sealed with the tape and the edge part sealed with a tape was enclosed in bag shape. Since the end of the package is surrounded by a tape in a bag shape, even if the pressure of the contents is received, the deformation of the end is suppressed by the tape, so the sealing performance is high and the end is damaged. It becomes a difficult package.

  Moreover, in order to achieve the said objective, the packaging body manufacturing method which concerns on invention of Claim 7 forms a cylindrical film by overlapping and sealing the edge part of a strip | belt-shaped film, for example, as shown in FIG. A vertical sealing step (St1, St2); a filling step (St3) for filling the tubular film with the contents; and a predetermined interval in the longitudinal direction of the tubular film with respect to the tubular film filled with the contents A squeezing step (St4) for forming a non-existing portion of the contents flat; a converging step (St5) for converging the non-existing portion in a direction crossing the flat surface; and a tape that overlaps the tape so as to surround the converging absent portion A supply step (St6); a first sealing step (St7) for sealing together with the tape in the transverse direction in the absence portion where the tape is overlapped; and sealing so that the tape surrounding the absence portion becomes a closed ring The second Le step and (St8); provided in a sealed portion in the first sealing step, a cutting step of cutting the tubular film (St9).

  If comprised in this way, it will become a package body manufacturing method which manufactures the package body by which the edge part was sealed with the tape and the edge part sealed with a tape was enclosed in bag shape. Since the end of the package is surrounded by a tape in a bag shape, even if the pressure of the contents is received, the deformation of the end is suppressed by the tape, so the sealing performance is high and the end is damaged. It becomes a difficult package. In addition, it forms a tubular film, fills the contents, forms the absent part of the contents, converges at the absent part, feeds and seals the tape, and cuts at the sealed part. It becomes the package manufacturing method to manufacture.

  Furthermore, in order to achieve the above-mentioned object, the packaging body according to the eighth aspect of the present invention is a cylinder in which the contents C are filled and the end portion 116 is sealed 111 and converged, for example, as shown in FIG. A cylindrical film 115; a content C filled in the cylindrical film 115 and enclosed by a seal 111; and a cylindrical film 115 that wraps around the converged portion of the cylindrical film 115 together with the seal 111 at the end 116 of the cylindrical film 115. 115, and a tape 113 formed in a bag shape with a second seal 112 formed in a different direction from the seal 111.

  With this configuration, the sealed portions at both ends are surrounded by the bag-like tape, so that deformation of the portion sealed with the tape can be suppressed even when subjected to the pressure of the contents. The package is less susceptible to damage.

  According to the present invention, an end sealed with a tape is manufactured, and a sealed end is sealed with a tape even when the pressure of the contents is received by manufacturing a package body in which the sealed end is surrounded by a bag. Since the deformation of the portion is suppressed, a package manufacturing apparatus and a package manufacturing method for manufacturing a package with improved sealing performance at the sealed end and increased strength are provided. In addition, since the sealed portions at both ends are surrounded by a bag-like tape, the package has high sealing performance and is not easily damaged.

  Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same or equivalent devices are denoted by the same reference numerals, and redundant description is omitted.

  With reference to the block diagram of FIG. 1, the packaging body manufacturing apparatus 1 which is the 1st Embodiment of this invention is demonstrated. FIG. 1A is a configuration diagram illustrating the overall configuration of the packaging body manufacturing apparatus 1. FIG. 1B is a partial perspective view illustrating the configuration of the focusing device 70, and FIG. 1C is a partial perspective view illustrating the configurations of the ultrasonic welding device 100 and the tape supply device 90. The up and down on the paper surface of FIG. 1A corresponds to the up and down in the actual vertical direction, and a cylindrical film F1 described later runs so as to flow from top to bottom in the drawing. That is, the upper side is the upstream side in the traveling direction of the tubular film F1 in the filling and packaging operation, and the lower side is the downstream side in the traveling direction. The belt-like film wound in a roll shape is rotatably supported as an original fabric 21. The belt-like film F drawn out from the original fabric 21 travels while being guided by the guide rollers 22 </ b> A and 22 </ b> B and is guided to the forming plate 11. The original fabric supply device 20 is configured by the original fabric 21 and the guide rollers 22A and 22B. The material of the belt-like film is preferably a vinylidene chloride resin for heat welding, and may be another olefin resin. The belt-like film may be a single layer or a multilayer.

  The forming plate 11 has a cylindrical shape that opens up and down. In addition, there is a circumferential gap extending in the longitudinal direction at one place in the circumferential direction. The upper edge of the forming plate 11 is curved and inclined, and the belt-like film F is formed into a continuous cylindrical film F1 having an overlapping portion at the side edge by being guided along the inner surface thereof. A guide tube 12 is suspended below the forming plate 11 on the downstream side, and the tubular film F1 is guided to travel downstream while maintaining its tubular shape.

  The overlapping portion of the tubular film F1 guided by the guide tube 12 is welded while being pressed by the vertical sealing device 13 and is vertically sealed. Ultrasonic welding is preferable as the welding means by the vertical seal device 13, but other than this, resistance heating welding, high frequency dielectric heating welding, laser heating welding, molten resin droplet welding, and other various welding means can be used. . In addition, the vertical seal may be a so-called jointed sticker or an envelope sticker.

  In the upper part of the package manufacturing apparatus 1, a filling apparatus 30 including a pump 31 and a nozzle 32 for filling the vertically sealed cylindrical film F1 with the contents C is provided. The nozzle 32 is connected to a pump 31 installed above the forming plate 11, and the tip is introduced into the guide tube 12. The tip of the nozzle 32 opens on the downstream side of the vertical sealing device 13. The pump 31 may be installed not in the upper part of the forming plate 11 but in another position where the contents are easily replenished, and connected to the nozzle 32 by piping. In particular, when filling a relatively heavy content such as kneaded food, the kneaded food stored in a container installed on the ground is pumped to the position of the nozzle 32 by a pump and supplied. Is good.

  A feed roller 14 that is a feed device is provided on the downstream side of the guide tube 12 and the nozzle 32. In the feed roller 14, the cylindrical body 15a in which the vertically sealed cylindrical film F1 is filled with the contents C is continuously moved downward with the pair of cylindrical feed rollers 14 pressing the contents C. Then, it is conveyed with narrow pressure.

  An ironing device 40 is provided on the downstream side of the feed roller 14. The ironing roller 41 of the ironing device 40 has a cylindrical outer surface extending in a direction perpendicular to the paper surface in FIG. 1, and the length in the perpendicular direction is at least longer than the folding width, and is supported by the arm body 42. The “folding width” refers to the width when the cylindrical body 15a is flattened, in other words, the half length of the circumferential length of the cylindrical body 15a. The arm body 42 can swing around its one end 42a, and a lateral member 43 is connected to the middle part via a pin or the like. When the pair of lateral members 43 move in the proximity direction, the cylindrical body 15 a is narrowed by the pair of squeezing rollers 41. When the horizontal member 43 moves backward in the separation direction, the squeezing roller 41 does not narrow the cylindrical body 15a. Thus, the absent portion 15b of the contents C is formed in the traveling cylindrical body 15a by a predetermined distance in the traveling direction. The ironing device 40 is not limited to a roller as long as the absent portion 15b of the contents C can be formed flat on the tubular film 15a, and for example, the tubular film 15a is crushed from both sides with a flat member, and the contents are distributed up and down. It may be something like this. Such crushing is also included in the concept of “squeezing” here.

  An ultrasonic welding device 100 is installed on the downstream side of the ironing device 40. Further, a focusing device 70 having two sets of focusing plates 71 a, 72 a, 71 b and 72 b above and below the ultrasonic welding device 100 is installed together with the ultrasonic welding device 100. Further, the tape supply device 90 that supplies the tape 120 that is sealed together with the tubular film 15a and reinforces the sealed portion to the sealed portion is the ultrasonic welding device 100 and the focusing device as viewed from the central axis of the tubular film 15a. It is installed in a direction orthogonal to the device 70.

  As shown in the partial perspective view of FIG. 1B, the converging device 70 includes converging plates 71 and 72 (71a and b are collectively referred to as 71 and 72a and b are collectively referred to as 72). The film is sandwiched in the width direction of the flat film. The opposing focusing plates 71a (b) and 72a (b) reciprocate close to each other and then away from each other. This reciprocation is performed in a direction orthogonal to the reciprocation of the ironing device 40. That is, in FIG. 1 (a), the focusing device 70 is also drawn so as to reciprocate on the paper surface, but actually it reciprocates in a direction perpendicular to the paper surface. In the converging plates 71 and 72, V-shaped converging grooves are formed at opposing edges on the film side. When the opposing focusing plates 71 and 72 are close to each other, the left and right focusing plates 71 and 72 overlap to form one small space between the groove bottoms of the respective V-shaped grooves. If a U-shaped notch is formed in the groove bottom of the V-shaped groove, a circular space is formed between the U-shaped bottoms when the focusing plates 71 and 72 are close to each other, which is preferable.

  In the ultrasonic welding apparatus 100, a horn 50 and an anvil 60 are arranged to face each other with a film interposed therebetween. The ultrasonic horn 50 and the anvil 60 reciprocate in the same direction as the reciprocating movement of the focusing plates 71 and 72. That is, reciprocation in a direction perpendicular to the paper surface of FIG. When the focusing plates 71 and 72 of the focusing device 70 are close to each other, the horn 50 and the anvil 60 are also close to each other. The horn 50 and the anvil 60 seal the absent portion 15b focused by the focusing plates 71 and 72 while narrowing the absent portion 15b and welding the film.

  With reference to the partial perspective view of FIG.1 (c) and the partial perspective view of FIG. 3, the tape supply apparatus 90 and the ultrasonic welding apparatus 100 are demonstrated. The tape supply device 90 is a device for supplying a reinforcing tape 120 for a portion to be sealed. The tape supply device 90 is a wound tape (not shown), a pair of rollers 93 for feeding the tape, and the tape to a predetermined length. A cutter (not shown) for cutting, and a support 91 that holds the cut tape 120 in a U shape and overlaps the absent portion 15b. The surface 94 of the support 91 that holds the cut tape 120 faces the direction in which the tubular film 15a travels, is formed in a U shape, and sucks the tape 120 onto the U shape surface 94. A suction port 92 for sucking air is formed. The suction port 92 is connected to a suction pump (not shown) and sucks air. When the tape 120 is fed from the roller 93, the support 91 sucks air from the suction port 92, sucks the tape 120 against the U-shaped surface 94 by the suction force, and makes the tape 120 U-shaped. Hold. The support tool 91 holds the tape 120 and projects in the direction of the U-shaped surface 94 so that the tape 120 overlaps the absent portion 15b.

  The dimensions and the like of the tape 120 can be appropriately determined according to the design specifications of the package, but the width of the tape 120 is preferably 10 to 100 mm and the thickness is preferably 10 to 300 μm. A plurality of tapes 120 may be stacked as necessary. The material of the tape 120 is preferably a vinylidene chloride resin, but may be an olefin resin. Further, the tape 120 may be configured of a single layer or multiple layers. The material of the tape 120 is preferably the same as the material of the film, but may be a different material that can be welded.

  The horn 50 and the anvil 60 are configured by a horn 51 and an anvil 65 having a long crimp surface in the horizontal direction, and a horn 56 and an anvil 66 having a long crimp surface in the vertical direction. The horn 51 and the horn 56 are connected to the intermediate position in the vertical direction of the horn 56 from the horizontal direction so as to form the crimping surfaces 51a and 56a in a shape in which the T-shape is tilted sideways. Similarly, the anvil 65 is connected to an intermediate position in the vertical direction of the anvil 66 from the horizontal direction. The horn 51 and the horn 56, or the anvil 65 and the anvil 66 may be formed by arranging horns or anvils manufactured separately, or may be integrated with each other after being arranged, or may be manufactured integrally. May be. When the thickness of the portion to be crimped by the horn 51 and the anvil 65 is different from the thickness of the portion to be crimped by the horn 56 and the anvil 66, the horn 51 and the horn 56 and the anvil 65 and the anvil 66 are separated and crimped. It is preferable that the horns 51 and 56 and the anvils 65 and 66 have different structures. When the horn 51 and the horn 56 are configured integrally by sharing a converter that generates ultrasonic vibrations, the anvil 65 and the anvil 66 are separated and the crimping surface 65a and the crimping surface 66a are shifted. It is preferable.

  Further, as shown in the perspective view of FIG. 2A and the side view of FIG. 2B, the crimping surface 65a of the anvil 65 is formed on the central crossing portion 61 that crosses the central portion thereof and on both sides of the central crossing portion 61. Both end portions 62 that have escaped from the central crossing portion 61 and depressions 63 that are grooves formed between the central crossing portion 61 and both end portions 62, and when viewed from the side (in the y direction), the cross section is It is preferable that the Chinese character “mountain” is shaped horizontally. Here, when the horn and the anvil come close to each other for crimping (contact via the welded object), the center transverse part 61 crimps the welded object to the both end parts 62 that have escaped from the central transverse part 61. On the other hand, the both end portions 62 are not close enough to contact each other via the object to be welded, and the both end portions 62 are slightly separated from the crimping surface 51a of the horn and are in a position pulled from the crimping surface. To do. Since the pressure-bonding surface 65a of the anvil 65 has the central transverse portion 61, both end portions 62, and the depression 63, the seal at the end of the package 110 is reinforced as described later, and the pressure resistance is increased.

  The horn 51 and the anvil 65 are sealed across the focused absent portion 15b. On the other hand, the horn 56 and the anvil 66 seal the tape 120 so as to close the U-shaped open portion of the U-shaped tape 120. The horn 56 and the anvil 66 seal the tape 120 slightly outside the focused absent portion 15b. In place of the ultrasonic welding apparatus 100, a resistance heating welding apparatus, a high frequency dielectric heating welding apparatus, a laser heating welding apparatus, and other various welding apparatuses can be used. Each welding apparatus is configured to provide a seal that crosses the absent portion 15 b converged with the tape 120 and a seal that closes an open portion of the U-shaped tape 120.

  A cutting device 80 is provided downstream from the focusing device 70, the tape supply device 90, and the ultrasonic welding device 100 by a predetermined interval in which the absent portion 15b is formed, that is, by the length of one package. . The cutting device 80 includes a cutter 81. The cutter 81 is plate-shaped, and a sharp blade portion is provided on the side where the film to be cut (absent portion 15b) is present. The cutter 81 also reciprocates similarly to the focusing device 70 and the ultrasonic welding device 100. The reciprocating motion of the cutter 81 also reciprocates in the direction perpendicular to the paper surface of FIG. 1A, similarly to the ultrasonic welding device 100 and the focusing device 70. Accordingly, it is preferable to use a common drive device (not shown) for the configuration because the configuration is simplified.

  Further, the converging device 70, the tape supply device 90, the ultrasonic welding device 100, and the cutting device 80 condense the absent portion 15b while moving downward at the same speed as the cylindrical body 15a is sent downward. It is preferable to perform a so-called “worship motion (box motion)” in which 120 is supplied and sealed and cut, and after cutting, the absent portion 15b is opened and returned to the upper position. Therefore, when the focusing device 70, the tape supply device 90, the ultrasonic welding device 100, and the cutting device 80 are installed on a common gantry (not shown), the configuration is simplified.

  Then, manufacture of the package 110 using the package manufacturing apparatus 1 which is the 1st Embodiment of this invention shown in FIG. 1 is demonstrated. The belt-like film F is pulled out from the original fabric 21 at a predetermined speed, is applied with a predetermined tension by the guide rollers 22A and 22B, is travel-guided, and reaches the forming plate 11.

  The belt-like film F that has reached the forming plate 11 is formed in a cylindrical shape having overlapping portions at the side edges, and the overlapping portions are welded by the vertical sealing device 13. In this way, the vertically sealed tubular film F1 is formed. The cylindrical film F1 is filled with the contents C from the pump 31 through the nozzle 32. The cylindrical body 15 a filled with the contents C is conveyed downstream by the feed roller 14. The pair of feed rollers 14 is transported with a narrow pressure so that the cylindrical body 15a is locally crushed, but the crushed cylindrical body 15a passes through the position of the feed roller 14 due to the internal pressure of the contents C. Return to the original cylindrical shape.

  The cylindrical body 15a is intermittently compressed over a predetermined length by the pair of squeezing rollers 41, and the absent portion 15b without the contents C is formed at a predetermined interval.

  Here, focusing, sealing, and cutting of the package will be described with reference to the partial perspective view of FIG. As shown in FIG. 3A, the flattened absent portion 15b is focused by the focusing device 70 in a direction crossing the flat surface. As shown in FIG. 3B, the absent portion 15b is gathered together by focusing.

  On the other hand, as shown in the partial perspective view of FIG. 4, in the tape supply device 90, the tape 120 is fed to the support 91 side while being narrowed by the roller 93 (see FIG. 4A), and has a predetermined length. Then, it is cut (see FIG. 4B). The predetermined length is a length of the tape 120 that is longer than the length along the U-shaped surface 94 of the support and protrudes from the U-shaped surface 94 of the support. The length of the tape 120 that protrudes from the U-shaped surface 94 is a length that allows the second seal to be performed at the protruding portion, although the protruding portion does not hang down. Although it varies depending on the material and thickness of the tape, the thickness is suitably 1 mm or more and 15 mm or less, preferably 3 mm or more, and preferably 10 mm or less. The cut tape 120 is sucked by the suction port 92 of the support 91 and formed into a U shape and is held (see FIG. 4C). In addition, the width of the support tool 91 is narrower than the width of the tape 120, and the support tool 91 sucks and supports a lower position rather than the center of the width of the tape 120. Alternatively, the upper position may be sucked and held.

  Therefore, as shown in FIG. 3C, the U-shaped tape 120 is overlaid on the converged absent portion 15b. Here, “to be overlapped” means that the tape 120 is brought close to or in contact with the absent portion 15 b so that the converged absent portion 15 b becomes a U-shaped bottom portion of the tape 120. That is, the holder 91 protrudes in the direction of the absent portion 15b.

  Therefore, the tape 120 and the absent portion 15b are sandwiched and welded by the horn 50 and the anvil 60. As shown in FIG. 3D, since the horns 51 and 56 and the anvils 65 and 66 are integrally formed, the first seal 121 and the second seal 122 are applied simultaneously. By this sealing, the tape 120 and the absent portion 15b are sealed together. Further, the contents in the longitudinal direction of the tubular film 15a and the circulation of air and moisture are sealed. Therefore, the sealed package 110 is obtained. Further, the tape 120 is sealed in the transverse direction by the first seal, and is formed in an annular shape by the second seal, whereby two bags 123 opened in the direction of the cylindrical film 15a filled with the contents C, 124.

  Here, the support tool 91 holds the tape 120 not at the center of the width of the tape 120 but at a lower position, and the horn 51 and the anvil 65 seal the center of the width of the tape 120. And the horn 51 or the anvil 65 do not interfere with each other. That is, the horn 51 and the anvil 65 and the support 91 are installed so as to be shifted in the vertical direction so that there is no mechanical interference. When the tape 120 is sandwiched between the horn 50 and the anvil 60, the support 91 stops the suction from the suction port 92 and retreats from the periphery of the absent portion 15b. In addition, the 1st seal | sticker 121 by the horn 61 and the anvil 65 and the 2nd seal | sticker by the horn 56 and the anvil 66 may not be simultaneous, even if the 1st seal | sticker 121 is performed previously, The second seal 122 may be performed first.

  Note that the horn 51 and the anvil 65 are pressure-bonded when the taped 120 surrounds the converged absent portion 15b. On the other hand, the horn 56 and the anvil 66 are only bonded to the tape 120. Therefore, what is crimped by the horn 51 and the anvil 65 becomes thicker. Therefore, the pressure-bonding surface 66a of the anvil 66 is made to protrude toward the horn 56 side than the pressure-bonding surface 65a of the anvil 65. When the pressure-bonding surface 66a of the anvil 66 protrudes, a thinner object to be welded (tape 120) is pressure-bonded, and the thicker object to be welded (the converged absent portion 15b and the tape 120) is too large. In addition, it can be pressure-bonded so that the pressure strength is not reduced. The position of the crimping surface may be adjusted on the crimping surface 51 a of the horn 51 and the crimping surface 56 a of the horn 56.

  Here, as shown in the side view of FIG. 2 (c), when the central portion 61, both end portions 62, and the depression 63 are formed on the pressure-bonding surface 65 a of the anvil 65, the tape 120 and the absent portion are formed at the central portion 61. The melt S melted at that time is accumulated in the recess 63, and the melt S adheres to both sides of the pressure-sealed portion. Therefore, the melt-bonded S on both sides adheres to the part that has been pressure-bonded and sealed, and the thickened part is reinforced to increase the pressure resistance. In addition, the pressure-sealed portion is formed thin as the melt S flows out, and is easily cut by the subsequent cutting device 80.

  As shown in FIG. 3 (e), after the first seal and the second seal are applied in the ultrasonic welding measure 100, the cutting device 80 cuts the first sealed portion 121. . By being cut, it becomes a single package 110, which is unloaded from the package manufacturing apparatus 1 and shipped as a product through necessary processing such as boiling and retort. Further, since the tape 120 is cut at the bottoms of the two bags 123 and 124, each becomes a bag surrounding the end portion 116 of the package 110 (see FIG. 6).

  As described above, according to the package manufacturing apparatus 1 according to the first embodiment of the present invention, the sealed portion of the end of the package 110 is surrounded by the bag of the tape 120. When the sealed portion is surrounded by a bag, for example, when the internal pressure acts on the package 110 by the content C, such as when the content C expands and the film contracts, the seal is sealed. The deformed portion is restrained by the tape 120 bag. Therefore, the stress acting on the film of the sealed part is reduced, and the sealed part is less likely to be damaged. That is, the pressure strength is increased. Furthermore, in the conventional package that seals the tape integrally with the tubular film, the tape is often boiled and the appearance is often deteriorated in the package that is heated by boil for cooking. By making it into a shape, it is possible to prevent it from giving up.

  Then, with reference to the flowchart of FIG. 5, the manufacturing method of the package 110 which is the 2nd Embodiment of this invention is demonstrated. Here, the packaging body is not limited to the packaging body manufacturing apparatus 1 (see FIG. 1) according to the first embodiment of the present invention, and the packaging body may be manufactured by any manufacturing apparatus. First, a belt-like film is formed into a cylindrical shape by overlapping side edges with a forming plate or the like to form a cylindrical film (step St1). By vertically sealing the overlapping portion of the side edges of the tubular film, a vertically sealed tubular body is formed (step St2). Then, the cylindrical body is filled with the contents from the nozzle inserted into the cylindrical body (step St3).

  By squeezing the cylindrical body filled with the contents, an absent portion having a predetermined length and having no contents is flattened at a predetermined interval (step St4). The formed absent part is converged in a direction along the flat surface (step St5). The tape is stacked on the absent portion that has become narrowed by focusing (step St6). The tape is U-shaped and is stacked so that there is an absence at the bottom.

  At the center of the absent portion, the absent portion is sealed in the transverse direction together with the tape (first seal) (step St7). By this sealing, the tape and the absent portion are integrated, and the contents in the longitudinal direction of the tubular film and the circulation of air and moisture are sealed. Therefore, it becomes a sealing package.

  The opened portion of the U-shaped tape is sealed (second seal) (step St8). That is, the tape has an annular shape surrounding the absent portion due to the seal in the running direction of the film. Along with the transverse seal, the tape is in the form of two bags connected to the bottom that open in the direction of the tubular film filled with the contents. Note that either the first seal or the second seal may be sealed first, or may be sealed simultaneously as described above.

  Next, it cut | disconnects in the part by which the 1st seal was carried out, and it becomes one package body (step St9). Since the first sealed portion is cut, the tape becomes two bags surrounding the sealed portion at the end.

  During the above operation (steps St1 to St9), the film is continuously fed (St10). That is, the tape stack (step St6), the first seal (step St7), and the second seal (step St8) are operated while feeding the film.

  According to the method for manufacturing a package according to the second embodiment of the present invention described above, the tape becomes a bag surrounding the sealed portion at the end of the package, so that the sealed portion is deformed by the internal pressure. This has the effect of suppressing the sealing and reinforcing the sealed portion.

  Subsequently, a package 110 according to a third embodiment of the present invention will be described with reference to FIG. 6A is a front view of the package 110, FIG. 6B is a diagram (top view) viewed from the direction in which the film 115 of the package 110 is vertically sealed, and FIG. It is the figure (side view) seen from the longitudinal direction. The cylindrical film 115 that wraps the contents C is formed by overlapping the side edges of the belt-like film and vertically sealing them. Along the vertical seal portion 114, the overlapped excess portion 117 overlaps the cylindrical film 115. The material of the film 115 is vinylidene chloride resin, but other olefin resins may be used, and the film 115 may be a single layer or a multilayer.

  The longitudinal end 116 of the film 115 is focused, sealed and surrounded by tape 113. The tape 113 surrounds the converging end portion 116 of the film 115 and seals the peripheries 111 and 112 into a bag shape. That is, the narrowed end portion is sandwiched with the tape 113 from the lateral direction (direction orthogonal to the longitudinal direction) of the package body, and the end 111 in the longitudinal direction of the package body 110 is sealed, and the sandwiched and overlapped side The part 112 is sealed. The longitudinal end 111 is sealed together with the film 115 to seal the end of the package 110. The material of the tape 113 is a vinylidene chloride resin, but other olefin resins may be used, and the tape 113 may be a single layer or multiple layers. The material of the tape 113 is preferably the same as that of the film 115, but may be a different material that can be welded.

  The tape 113 becomes a bag, so that deformation of the end portion 116 of the film 115 when the internal pressure is applied due to the expansion of the contents C or the contraction of the film 115 is suppressed. That is, the package 110 has an increased pressure resistance. In addition, the package does not lose its appearance due to the tape fluttering. The contents C are typically sausages, stick cheeses, and the like, but may be foods other than these, or may be building materials other than foods such as caulking materials, cosmetics, and the like.

  The colors of the tubular film 115 and the tape 113 may be the same or different. The package can be easily identified by changing the color. For example, a package in which the film 115 is orange and the tape 113 is red, the film 115 is gold, and the tape 113 is red. Further, a cool feeling may be produced based on a cold color system such as blue in summer and a warm color system such as red or orange may be used in winter. In addition, the film 115 and tape 113 decorated with a pattern such as gradation, spectrum, iridescent color, and geometric pattern may be used to provide a more colorful package. Adopting such colorful colors facilitates the identification of the package and also encourages consumers' willingness to purchase.

  Below, the result which manufactured the package which concerns on this invention, and confirmed the compressive strength is demonstrated. The material of the cylindrical film for packaging is a vinylidene chloride resin film having a thickness of 40 μm, the material of the tape is the same vinylidene chloride resin as the cylindrical film, and the shape of the tape is 18 mm long, 16 mm wide, The thing of thickness 80micrometer was used. The package was manufactured by filling the emulsion for fish sausage as a content with a diameter of 20 mm and a length of 150 mm.

  As conditions for sealing the tubular film and tape by ultrasonic welding, it is preferable that the vibration frequency is 15 to 50 kHz, the amplitude of the vibrator is 5 to 35 μm, and the nominal output is 300 to 600 W, more preferably, The vibration frequency is 40 kHz, the vibrator amplitude is 5 to 15 μm, and the nominal output is 300 W. Therefore, sealing was performed with an oscillation frequency of 40 kHz, a vibrator amplitude of 15 μm, and a nominal output of 300 W. However, the nominal output and vibration frequency can be set to arbitrary values as long as they are within the scope of regulations for occupational safety and health.

  Confirmation of pinhole formation suppression in the package was performed as follows. A 0.4% aqueous solution of food coloring blue No. 1, which is a blue pigment, was raised to 85 ° C., a package was put into this aqueous solution, and boil heating was performed for 1 hour. After the boil heating was completed, the package was cooled, and then sufficiently washed so that no pigment remained outside the package, and further dried. The package of the package was opened, and the presence or absence of pinholes in the package was confirmed by visually observing whether the blue pigment could be adhered to the contents. The appearance of the tape was also visually observed by boil heating.

  As shown in FIG. 7, no pinholes were observed in the package according to the present invention. On the other hand, in the package (comparative example) reinforced with the tape only of the first seal without applying the second seal, the formation of pinholes was confirmed in 12% of the packages. From the above observation, it was confirmed that the package according to the present invention was excellent in pressure resistance. Furthermore, even after boiling, the tape curl observed in the 48.5% package in the comparative example was not observed in the package according to the present invention.

It is a figure explaining the package body manufacturing apparatus which is the 1st Embodiment of this invention. Fig.1 (a) is a block diagram explaining the whole structure of the package body manufacturing apparatus which is the 1st Embodiment of this invention. FIG. 1B is a partial perspective view illustrating the focusing device. FIG.1 (c) is a fragmentary perspective view explaining a tape supply apparatus and an ultrasonic welding apparatus. It is a figure explaining the anvil which has a hollow. FIG. 2A is a perspective view of the anvil. FIG. 2B is a side view of welding. FIG.2 (c) is a side view explaining the flow of the molten material by welding, and the vicinity of the welded part. It is a fragmentary perspective view explaining the manufacturing process of a package body edge part. FIG. 3A shows a case where the absent portion is converged, FIG. 3B shows a converged absent portion, FIG. 3C shows a state where the tape is overlapped, and FIG. 3D shows that the first seal and the second seal are simultaneously formed. When done, (e) shows the cut. It is a fragmentary perspective view explaining supply of the tape in a tape supply apparatus. It is a flowchart explaining the manufacturing method of the package which is the 2nd Embodiment of this invention. It is a three-view figure explaining the package which is the 3rd Embodiment of this invention. It is the figure which put together the pinhole test result and blister test result of the Example and comparative example of this invention.

Explanation of symbols

C Contents F Strip-like film F1 Cylindrical film S Melt 1 Package production apparatus 11 Forming plate 12 Guide cylinder 13 Vertical seal device 14 Feed roller 15a Package 15b Absent part 20 Material feed device 21 Material 22A, 22B Guide roller 30 filling device 31 pump 32 nozzle 40 squeezing device 41 squeezing roller 42 arm body 43 horizontal member 50 horn 51 first sealing horn 56 second sealing horn 51a, 56a horn crimping surface 60 anvil 61 central transverse portion 62 both ends Portion 63 Depression 65 First sealing anvil 66 Second sealing anvil 65a, 66a Anvil crimping surface 70 Converging device 71, 72 (a, b) Converging plate 80 Cutting device 81 Cutter 90 Tape supply device 91 Support tool 92 Suction port 93 Roller 94 U-shaped surface (of support) 100 Super sound Welding device 110 Package 111, 112 Sealed portion 113 (tape) Tape 114 Vertical seal portion 115 Film 116 End of film 117 Excess of film overlap 120 Tape 121 First seal portion 122 2 seal parts 123, 124 Bag formed of tape

Claims (8)

An ironing device that flatly forms a non-existing portion of the content at predetermined intervals in the longitudinal direction of the tubular film with respect to the tubular film filled with the content;
A focusing device for focusing the absent portion in a direction crossing a flat surface;
A tape supply device that holds the tape in a U-shape and superimposes the tape on the converged absent portion from a direction different from the longitudinal direction of the tubular film;
A first sealing device that performs a first seal with the tape in a transverse direction across the converged absence where the tape is stacked;
A second sealing device for performing a second seal to close the U-shaped open portion of the tape;
Package manufacturing equipment. The first sealing device and the second sealing device are one ultrasonic welding device that melts a material to be welded by ultrasonic vibration energy and presses the material to be welded;
The ultrasonic welding apparatus includes a horn having a T-shaped surface for crimping the object to be welded;
The packaging body manufacturing apparatus according to claim 1. In the ultrasonic welding apparatus, a surface on which the anvil to-be-welded object for the first seal is pressed and a surface on which the anvil to-be-welded for the second seal are pressed are configured separately.
The packaging body manufacturing apparatus according to claim 2. In the ultrasonic welding apparatus, the surface of the anvil that seals the first seal has a recess for storing the melted object to be bonded;
The packaging body manufacturing apparatus according to claim 2 or claim 3. A raw material supply device for supplying a strip film;
A vertical sealing device for forming a tubular film by overlapping and sealing the side edges of the belt-shaped film;
A filling device for filling the cylindrical film with contents;
A cutting device for cutting the tubular film at the first sealed portion;
The package manufacturing apparatus of any one of Claim 1 thru | or 4. A packaging film manufacturing apparatus according to any one of claims 1 to 5, wherein a cylindrical film filled with the contents, or the band-shaped film and the contents to be filled are supplied to the packaging body, Manufacture;
Packaging manufacturing method. A vertical sealing step of forming a tubular film by overlapping and sealing the side edges of the belt-shaped film;
A filling step of filling the cylindrical film with contents;
An ironing step of flatly forming a non-existing portion of the content at predetermined intervals in the longitudinal direction of the tubular film with respect to the tubular film filled with the content;
A focusing step of focusing the absent portion in a direction crossing a flat surface;
A tape supplying step of overlapping the tape so as to surround the converged absent portion;
A first sealing step for sealing together with the tape in a transverse direction the absent portion on which the tape is stacked;
A second sealing step for sealing so that the tape surrounding the absent portion becomes a closed ring;
A cutting step of cutting the tubular film at a portion sealed in the first sealing step;
Packaging manufacturing method. A tubular film filled with contents, sealed at the ends and focused;
Contents filled in the tubular film and enclosed by the seal;
A tape that wraps around the converged portion of the tubular film, is welded to the tubular film together with a seal at the end of the tubular film, and is formed into a bag shape with a second seal in a direction different from the seal And comprising:
Packaging body.

Images